Seventy kilometers from Agadir, to the north-east of 'Idaoutanane' region, and under the 'Tasroukht' karst plateau located in the Western 'high Atlas' and overlooking the village of 'Tizgi NChourfa' , There is the Cave of 'Win Timdouin' (The place of many Lakes) . Its water is inexhaustible. With a channel extending along 7,300 meters and with a total area, including its all branches, of 19000 meters, this Make of it the largest underground river in North Africa..